Super JSON Viewer

Make sense of JSON and JSONC with clear tree views, inline comments, powerful search, and distraction-free reading. Fully offline.

Less scrolling. Less guessing. More understanding. JSON should help you understand your data—not stand between you and it. Super JSON Viewer turns dense JSON and JSONC files into a clear, browsable structure, with comments right where you need them. Whether you’re exploring an unfamiliar configuration, checking a data file, or trying to understand how objects connect, give your eyes—and your attention—a little breathing room. FIND YOUR WAY THROUGH COMPLEX DATA Expand objects and arrays at your own pace. See field types, values, and paths at a glance. Search across field names, values, comments, and paths to find what matters. KEEP THE EXPLANATION WITH THE DATA Read JSONC comments alongside their fields, so the “why” stays close to the “what.” Line comments, block comments, and trailing commas are all supported. FOLLOW CONNECTIONS Navigate between matching ID values and their reference targets. Spend less time hunting through repeated identifiers and more time understanding the structure. MAKE ROOM TO THINK A compact toolbar keeps the focus on your document. Switch to focus mode or distraction-free fullscreen when you want more space to read. MOVE EASILY BETWEEN VIEWS Explore the tree, jump to the original source line, copy a field path or value, and export plain JSON with comments removed. YOUR FILES STAY WITH YOU Everything is processed locally in your browser tab. No uploads, no accounts, no ads, and no analytics or tracking. The extension does not request access to website content or browsing history. START IN SECONDS Click the extension icon, then open a file, drag it onto the page, or paste your JSON. Try the included fictional library example to get a feel for the reader. A few practical details: • Supports JSON and JSONC files up to 5 MB. • The interface is currently in Simplified Chinese. • Includes keyboard navigation and a search shortcut: Ctrl/Cmd + K. • Warns about integers outside JavaScript’s safe range and blocks plain JSON export when those values are present. Open your JSON. Find your bearings. Read with clarity.